overrideCustomSet

Set button for custom modes (i18n aware)

Note: this is a i18n option. To override for single use, you must use:

{"overrideCustomSet": "Override Text"}

For more information on the i18n system, see: Localizing Datebox

Note that this can and should be included in a language pack. Of course, drop the ‘override’ to become ‘customSet’. It does not exist in any of the distributed language packs.